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Shimano Ultegra Di2 ST-R8170 + BR-R8170 Hydraulic Disc Brake - STI + Caliper - Flat Mount - Set Left and Right

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Τιμή πώλησης: 920,00 €
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Shimano Ultegra Di2 ST-R8170 + BR-R8170 Hydraulic Disc Brake - STI + Caliper - Flat Mount - Set Left and Right

Ultegra R8100 – Leave Time Behind

When developing the Ultegra R8100 series, Shimano took a holistic and 100 % performance-oriented approach, because great speed means great responsibility. Faster than ever before, the 12-speed road groupset scores with unparalleled control and comfort anytime and anywhere – whether in an everyman race, on the hunt for a personal best time or on a companionable ride.

As with the Dura Ace R9200, not only does Hyperglide+ make its way into the Ultegra's components, also its Di2 parts rely on Wireless technology to simplify operation and ensure smooth shifting.

Shimano Ultegra shift/brake set consisting of the electronic ST-R8170 STI lever for lightning-fast shifting and the hydraulic BR-R8170 disc brake caliper for superbly controllable and quiet braking. Trouble-free maintenance is provided by the proven One Way Bleeding concept and the Easy Hose Joint System which simplifies brake hose exchanges.
 

J-Kit (Easy Hose Joint System)

At brake systems with J-Kit hose joint the brake lever features an integrated olive what makes an easy brake hose installation and removal possible.

Shimano Ultegra Di2 ST-R8170 STI brake/shift lever

The ST-R8170 STI levers are not only characterised by their optimised ergonomics and even more precise dosing of the hydraulic disc brakes, but also impress above all with lightning-fast shifting processes, which are achieved not least through the Wireless functionality.

The wireless connection also offers another advantage: without electric cables, installation is easier and the cockpit appears tidier. Nevertheless, the shift/brake levers still offer a cable connection (EW-SD300) for the use of additional shifters in the drops or the top of the handlebar. For numerous customisation and configuration options, compatibility with the improved E-Tube Project app, which, like previous versions, allows you to adjust shift modes (Synchro-/Semi-Synchro-Shift, Multi-Shift), shift speed and button assignment on the fly.

To ensure that the braking performance is in no way inferior to the shifting functionality, the Ultegra Dual Control levers feature Servowave technology. With the help of an extended brake control range, this ensures excellent dosing that offers optimum comfort and control even in challenging conditions. Of course, for individual adjustment, the levers feature the option of reach and free stroke adjustment.

Shimano Ultegra BR-R8170 disc brake caliper

All around improved, the Shimano Ultegra BR-R8170 caliper offers optimised dosing, quieter braking performance and extremely simplified maintenance.

While a faster-gripping initial braking force always gives the feeling of full control, the 10 % increase in brake pad spacing allows for a significant reduction in noise during braking, despite a flatter overall construction. In addition, when the RT-MT900 brake disc rotor (sold separately) is used, its deformation-resistant design, even with increasing heat, helps to create an extremely quiet and smooth braking system.

To simplify maintenance, the hydraulic 2-piston brake caliper not only features the proven One-Way-Bleeding system, but also a separate arrangement of bleed nipple and opening screw. On the one hand, this minimises the risk of the bleed kit hose slipping off when opening or closing the system and, on the other hand, makes it unnecessary to dismantle the caliper from the frame for bleeding process.

If you need more detailed information about the single parts of the groupsets check the articles in the referring categories.

Material:

STI housing: carbon fiber reinforced polymer (CFRP, painted)
brake lever, brake caliper: aluminium (painted)
pistons: resin
 

Weight (manufacturer's specs):

approx. 391 grams (STI lever, pair)

approx. 146 grams (front caliper)
approx. 136 grams (rear caliper)

Scope of supply:

  • brake/shift lever incl. CR1632 battery (without EW-SD300 Di2 cable)
  • brake caliper (for 160 mm brake discs) incl. L03A Resin Ice-Tech brake pads (without disc rotor)
  • SM-BH90 brake hose (1000 mm front / 1700 mm rear)
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